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AssigneeWorkinter Limited
InventorYvon Georges Jaubertie
Estimating the term…
There is provided a method and apparatus for selective removal of materials present on an object A in one or more layers B by surface abrasion by projection onto the surface of the object A of a moving fluid composed of a gas and solid particles conveyed in the gas. The apparatus comprises at least two reservoirs (11,13,15) for solid particles (21,22,23 ) of at least two different sizes communicating with a single reservoir 30 trough conduits (24,25,26). Each conduit (24,25,26) has an obturator(27,28,29) movable between open and closed positions and the single reservoir (30) is connected to a further conduit (36) provided with a nozzle (37) situated in the proximity of the surface layer B to be stripped. Particles (31) are mixed in “T” joint(34) with gas from an air compressor (35) and directed out of the nozzle (37). The average granulometry of the particles (31) is adjusted, by removing and/or adding other solid particles, so as to adapt the average granulometry of the particles (31)to the nature of the object A and/or the state of its surface.
Method for selective removal of materials present on an object in one or more layers by surface abrasion, by projection onto the surface of this object of a moving fluid composed of a gas and solid particles conveyed by said gas, including the step of:
Method according to any preceding claim, wherein the granulometry of the solid particles is that which corresponds to the passage of the particles through a screen of between 10 and 100 mesh.
Method according to any preceding claim, wherein the granulometry of the solid particles is that which corresponds to the passage of the particles through a screen of between 30 and 90 mesh.
Method according to any preceding claim, wherein the granulometry of the solid particles is that which corresponds to the passage of the particles through a screen of between 20 and 80 mesh.
Method according to any preceding claim, wherein the granulometry of the solid particles is that which corresponds to the passage of the particles through a screen of between 30 and 80 mesh.
Method according to any preceding claim, wherein the granulometry of the solid particles is that which corresponds to the passage of the particles through a screen of between 30 and 50 mesh.
Method according to any preceding claim, wherein the granulometry of the solid particles is that which corresponds to the passage of the particles through a screen of between 10 and 40 mesh.
Method according to any preceding claim, wherein the granulometry of the solid particles is that which corresponds to the passage of the particles through a screen of between 12 and 30 mesh.
Method according to any preceding claim, wherein the particles are formed of a hydrophilic substance and contain water.
Apparatus for selective removal of materials present on an object in one or more layers by surface abrasion, by projection onto the surface of this object of a moving fluid composed of a gas and solid particles conveyed by said gas, comprises at least two reservoirs for solid particles of at least two sizes communicating with a single reservoir through conduits, each of said conduits having an obturator mounted therein so as to be movable in adjustable manner between two extreme positions corresponding respectively to total closure and to complete opening of the corresponding conduit, this single reservoir being connected to a further conduit provided with a nozzle.
Method for selective removal of materials, substantially as herein described with reference to the accompanying drawings.
Apparatus for selective removal of materials, substantially as herein described with reference to the accompanying drawings.
Dependencies are inferred from the claim text.